/usr/lib/python2.7/dist-packages/pyferret/regrid/ is in python-ferret 7.3-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/pyferret/regrid/__init__.py
/usr/lib/python2.7/dist-packages/pyferret/regrid/curv2rect.py
/usr/lib/python2.7/dist-packages/pyferret/regrid/curv3srect.py
/usr/lib/python2.7/dist-packages/pyferret/regrid/esmpcontrol.py
/usr/lib/python2.7/dist-packages/pyferret/regrid/esmpcontroltests.py
/usr/lib/python2.7/dist-packages/pyferret/regrid/regrid2d.py
/usr/lib/python2.7/dist-packages/pyferret/regrid/regrid2dexample.py
/usr/lib/python2.7/dist-packages/pyferret/regrid/regrid2dexample2.py
/usr/lib/python2.7/dist-packages/pyferret/regrid/regrid2dtests.py
/usr/lib/python2.7/dist-packages/pyferret/regrid/regrid3d.py
/usr/lib/python2.7/dist-packages/pyferret/regrid/regrid3dexample.py
/usr/lib/python2.7/dist-packages/pyferret/regrid/regrid3dtests.py
/usr/lib/python2.7/dist-packages/pyferret/regrid/regridtests.py